Kohler 20RESALm 20kw Air Cooled Standby Generator
Like the Generac unit, this one also provides dual-fuel capability, with simple changeover at your home. It has a built-in base, eliminating the need for a concrete mounting pad. Kohler claims that this generator will have full power available to your home within ten seconds from power loss. The engine is designed for heavy-duty usage, with hydraulic valve lifters for consistent operation, without having to be readjusted. It comes with a five year warranty, matching Generac for the longest of any generator on this list. The enclosure is fully corrosion proof. It comes with a 200 amp automatic switch.